Add support for gcc-profile

It's now possible to build PGO builds with GCC

Patch from Oystein Johansen

Signed-off-by: Marco Costalba <mcostalba@gmail.com>

diff --git a/src/Makefile b/src/Makefile
index 7ae2c5285317616c60af6617f31908f4f0ce45a0..7071e8905eb6e01be581e9f69c64b93c99fc6680 100644 (file)
--- a/src/Makefile
+++ b/src/Makefile
@@ -25,7 +25,6 @@ EXE = stockfish
 PREFIX = /usr/local
 BINDIR = $(PREFIX)/bin
 
-
 ### ==========================================================================
 ### Compiler speed switches for both GCC and ICC. These settings are generally
 ### fast on a broad range of systems, but may be changed experimentally
@@ -57,7 +56,6 @@ ICCFLAGS-OSX += -DNDEBUG
 ### ==========================================================================
 PGOBENCH = ./$(EXE) bench 32 1 10 default depth
 
-
 ### General compiler settings. Do not change
 GCCFLAGS += -g -Wall -fno-exceptions -fno-rtti
 ICCFLAGS += -g -Wall -fno-exceptions -fno-rtti -wd383,869,981,10187,10188,11505,11503
@@ -84,6 +82,7 @@ help:
        @echo "Makefile options:"
        @echo ""
        @echo "make                >  Default: Compiler = g++"
+       @echo "make gcc-profile    >  Compiler = g++ + automatic pgo-build"
        @echo "make gcc-popcnt     >  Compiler = g++ + popcnt-support"
        @echo "make icc            >  Compiler = icpc"
        @echo "make icc-profile    >  Compiler = icpc + automatic pgo-build"
@@ -117,13 +116,40 @@ gcc:
        CXXFLAGS="$(GCCFLAGS)" \
        all
 
+gcc-profile-make:
+       $(MAKE) \
+       CXX='g++' \
+       CXXFLAGS="$(GCCFLAGS)" \
+       CXXFLAGS+='-fprofile-generate' \
+       LDFLAGS="$(LDFLAGS)" \
+       LDFLAGS+=" -lgcov" \
+       all
+
+gcc-profile-use:
+       $(MAKE) \
+       CXX='g++' \
+       CXXFLAGS="$(GCCFLAGS)" \
+       CXXFLAGS+='-fprofile-use' \
+       all
+
+gcc-profile:
+       @touch *.cpp *.h
+       $(MAKE) gcc-profile-make
+       @echo ""
+       @echo "Running benchmark for pgo-build ..."
+       @$(PGOBENCH) > /dev/null
+       @echo "Benchmark finished. Build final executable now ..."
+       @echo ""
+       @touch *.cpp *.h
+       $(MAKE) gcc-profile-use
+       @rm -rf *.gcda bench.txt
+
 gcc-popcnt:
        $(MAKE) \
        CXX='g++' \
        CXXFLAGS="$(GCCFLAGS) -DUSE_POPCNT" \
        all
 
-
 icc:
        $(MAKE) \
        CXX='icpc' \
@@ -225,7 +251,7 @@ osx-x86_64:
        CXXFLAGS+='-arch x86_64 -mdynamic-no-pic' \
        LDFLAGS+='-arch x86_64 -mdynamic-no-pic' \
        all
-       
+
 osx-icc32:
        $(MAKE) \
        CXX='icpc' \
@@ -320,7 +346,7 @@ strip:
 
 ### Compilation. Do not change
 $(EXE): $(OBJS)
-       $(CXX) $(LDFLAGS) -o $@ $(OBJS)
+       $(CXX) -o $@ $(OBJS) $(LDFLAGS)
 
 ### Installation
 install: default